./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:09:52,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:09:52,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:09:52,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:09:52,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:09:52,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:09:52,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:09:52,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:09:52,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:09:52,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:09:52,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:09:52,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:09:52,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:09:52,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:09:52,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:09:52,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:09:52,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:09:52,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:09:52,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:09:52,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:09:52,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:09:52,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:09:52,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:09:52,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:09:52,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:09:52,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:09:52,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:09:52,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:09:52,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:09:52,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:09:52,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:09:52,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:09:52,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:09:52,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:09:52,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:09:52,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:09:52,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:09:52,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:09:52,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:09:52,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:09:52,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:09:52,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:09:52,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:09:52,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:09:52,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:09:52,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:09:52,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:09:52,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:09:52,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:09:52,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:09:52,267 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:09:52,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:09:52,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:09:52,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:09:52,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:09:52,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:09:52,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:09:52,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:09:52,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:09:52,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:09:52,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:09:52,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:09:52,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:09:52,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:09:52,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:09:52,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f [2021-12-22 13:09:52,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:09:52,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:09:52,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:09:52,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:09:52,522 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:09:52,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2021-12-22 13:09:52,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc43e61b/cccd815f569049c3b7e180829a28992c/FLAGf033cb2a9 [2021-12-22 13:09:52,926 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:09:52,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2021-12-22 13:09:52,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc43e61b/cccd815f569049c3b7e180829a28992c/FLAGf033cb2a9 [2021-12-22 13:09:53,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc43e61b/cccd815f569049c3b7e180829a28992c [2021-12-22 13:09:53,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:09:53,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:09:53,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:09:53,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:09:53,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:09:53,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d21592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53, skipping insertion in model container [2021-12-22 13:09:53,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:09:53,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:09:53,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2021-12-22 13:09:53,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2021-12-22 13:09:53,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:09:53,524 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:09:53,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2021-12-22 13:09:53,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2021-12-22 13:09:53,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:09:53,577 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:09:53,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53 WrapperNode [2021-12-22 13:09:53,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:09:53,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:09:53,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:09:53,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:09:53,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,634 INFO L137 Inliner]: procedures = 52, calls = 55, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 476 [2021-12-22 13:09:53,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:09:53,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:09:53,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:09:53,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:09:53,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:09:53,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:09:53,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:09:53,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:09:53,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (1/1) ... [2021-12-22 13:09:53,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:09:53,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:09:53,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:09:53,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:09:53,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:09:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 13:09:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 13:09:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-12-22 13:09:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-12-22 13:09:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-22 13:09:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-22 13:09:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-22 13:09:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-22 13:09:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-22 13:09:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-22 13:09:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-22 13:09:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-22 13:09:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-22 13:09:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-22 13:09:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:09:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-22 13:09:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-22 13:09:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:09:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:09:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-22 13:09:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-22 13:09:53,792 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:09:53,793 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:09:54,168 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:09:54,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:09:54,177 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-22 13:09:54,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:54 BoogieIcfgContainer [2021-12-22 13:09:54,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:09:54,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:09:54,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:09:54,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:09:54,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:09:53" (1/3) ... [2021-12-22 13:09:54,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7666077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:54, skipping insertion in model container [2021-12-22 13:09:54,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:09:53" (2/3) ... [2021-12-22 13:09:54,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7666077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:54, skipping insertion in model container [2021-12-22 13:09:54,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:54" (3/3) ... [2021-12-22 13:09:54,185 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2021-12-22 13:09:54,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:09:54,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:09:54,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:09:54,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:09:54,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:09:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 170 states have (on average 1.5647058823529412) internal successors, (266), 176 states have internal predecessors, (266), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-22 13:09:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 13:09:54,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:54,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:09:54,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash -937490108, now seen corresponding path program 1 times [2021-12-22 13:09:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:54,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975518674] [2021-12-22 13:09:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:54,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:09:54,363 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:09:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:09:54,419 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:09:54,420 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:09:54,421 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 13:09:54,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 13:09:54,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:09:54,427 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-22 13:09:54,429 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:09:54,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:09:54 BoogieIcfgContainer [2021-12-22 13:09:54,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:09:54,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:09:54,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:09:54,483 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:09:54,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:54" (3/4) ... [2021-12-22 13:09:54,485 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 13:09:54,546 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:09:54,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:09:54,548 INFO L158 Benchmark]: Toolchain (without parser) took 1217.08ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 89.4MB in the beginning and 94.0MB in the end (delta: -4.6MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,548 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:09:54,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.29ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 89.0MB in the beginning and 147.0MB in the end (delta: -58.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.13ms. Allocated memory is still 176.2MB. Free memory was 147.0MB in the beginning and 143.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,549 INFO L158 Benchmark]: Boogie Preprocessor took 29.13ms. Allocated memory is still 176.2MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,549 INFO L158 Benchmark]: RCFGBuilder took 507.30ms. Allocated memory is still 176.2MB. Free memory was 141.6MB in the beginning and 117.6MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,549 INFO L158 Benchmark]: TraceAbstraction took 300.65ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 99.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,550 INFO L158 Benchmark]: Witness Printer took 63.72ms. Allocated memory is still 176.2MB. Free memory was 99.4MB in the beginning and 94.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 13:09:54,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.29ms. Allocated memory was 115.3MB in the beginning and 176.2MB in the end (delta: 60.8MB). Free memory was 89.0MB in the beginning and 147.0MB in the end (delta: -58.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.13ms. Allocated memory is still 176.2MB. Free memory was 147.0MB in the beginning and 143.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.13ms. Allocated memory is still 176.2MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.30ms. Allocated memory is still 176.2MB. Free memory was 141.6MB in the beginning and 117.6MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 300.65ms. Allocated memory is still 176.2MB. Free memory was 117.0MB in the beginning and 99.6MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 63.72ms. Allocated memory is still 176.2MB. Free memory was 99.4MB in the beginning and 94.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int q_buf_0 ; [L33] int q_free ; [L34] int q_read_ev ; [L35] int q_write_ev ; [L36] int p_num_write ; [L37] int p_last_write ; [L38] int p_dw_st ; [L39] int p_dw_pc ; [L40] int p_dw_i ; [L41] int c_num_read ; [L42] int c_last_read ; [L43] int c_dr_st ; [L44] int c_dr_pc ; [L45] int c_dr_i ; [L152] static int a_t ; [L394] int m_pc = 0; [L395] int t1_pc = 0; [L396] int t2_pc = 0; [L397] int m_st ; [L398] int t1_st ; [L399] int t2_st ; [L400] int m_i ; [L401] int t1_i ; [L402] int t2_i ; [L403] int M_E = 2; [L404] int T1_E = 2; [L405] int T2_E = 2; [L406] int E_M = 2; [L407] int E_1 = 2; [L408] int E_2 = 2; [L413] int token ; [L415] int local ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=0, q_read_ev=0, q_write_ev=0, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L981] COND TRUE __VERIFIER_nondet_int() [L982] CALL main1() [L368] int __retres1 ; [L372] CALL init_model1() [L354] q_free = 1 [L355] q_write_ev = 2 [L356] q_read_ev = q_write_ev [L357] p_num_write = 0 [L358] p_dw_pc = 0 [L359] p_dw_i = 1 [L360] c_num_read = 0 [L361] c_dr_pc = 0 [L362] c_dr_i = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L372] RET init_model1() [L373] CALL start_simulation1() [L322] int kernel_st ; [L323] int tmp ; [L327] kernel_st = 0 [L328] CALL init_threads1() [L214] COND TRUE (int )p_dw_i == 1 [L215] p_dw_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L219] COND TRUE (int )c_dr_i == 1 [L220] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L328] RET init_threads1() [L331] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L334] kernel_st = 1 [L335] CALL eval1() [L249] int tmp ; [L250] int tmp___0 ; [L251] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L255] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L258] CALL, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L229] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L232] COND TRUE (int )p_dw_st == 0 [L233] __retres1 = 1 VAL [__retres1=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L245] return (__retres1); VAL [\result=1, __retres1=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L258] RET, EXPR exists_runnable_thread1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, exists_runnable_thread1()=1, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L258] tmp___1 = exists_runnable_thread1() [L260] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp___1=1, token=0] [L265] COND TRUE (int )p_dw_st == 0 [L267] tmp = __VERIFIER_nondet_int() [L269] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, tmp=0, tmp___1=1, token=0] [L275] CALL error1() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] [L27] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, E_1=2, E_2=2, E_M=2, local=0, M_E=2, m_i=0, m_pc=0, m_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_free=1, q_read_ev=2, q_write_ev=2, T1_E=2, t1_i=0, t1_pc=0, t1_st=0, T2_E=2, t2_i=0, t2_pc=0, t2_st=0, token=0] - UnprovableResult [Line: 390]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 205 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-22 13:09:54,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE